Sheath Air Purge Flow Filter for Nephelometer Back Catalog number: 385-0112-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-1305-EU Gilian 800i,5-Pack Kit, EU Cord Price on request 202816-1 Filter Housing, Rear GilAir-3/GilAir/5 Price on request GCU37AE-2 Cassette, 37mm 2pc w/ Type A/E Glass Fiber, 50/Box Price on request